1 in 6 mail shirt

I think you meant to say "1 in 6 mail shirts".

Mail shirts, also known as chainmail or chain armor, were a type of armor worn by medieval warriors. They were made up of small metal rings linked together to form a protective garment.

The phrase "1 in 6 mail shirts" is likely referring to the fact that mail shirts were often made up of small rings, and that one ring was typically linked to six others to form a single "link" or "ringlet" of the mail shirt. This means that for every six rings, there would be one ring that was not connected to the others, but rather hung loose as a separate piece.

Is there anything else you'd like to know about mail shirts or medieval armor?